ECVT in the 13F filings

Ecovyst Inc · CUSIP 27923Q109

Quarter

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q2 2023 Q2 2022 Q1 2022

Quarter end: 30 Jun 2026; the date the book describes
Filed: 2 Sep 2026; latest of these filings; the earliest 7 Aug 2026
Managers listing it: 23; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q1 2026 and Q2 2026; 1 listed it in both
Shares listed: 13,988,486; combined, among listed positions
Reported value: $174m; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 13 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -2,382,054.

Managers listing ECVT in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

23 of 23 holders

				Action		Filing
Fidelity (FMR LLC)	5,333,701	$66m	under 0.1%	Added	+866,276	13 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP	5,132,947	$64m	under 0.1%	Added	+303,913	13 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC	439,630	$5.5m	under 0.1%	Trimmed	-210,148	2 Sep 2026 (the filing on sec.gov)
Invesco Ltd	381,441	$4.7m	under 0.1%	Added	+3,986	14 Aug 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP	362,506	$4.5m	under 0.1%	Added	+213,118	14 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.	351,792	$4.4m	under 0.1%	Trimmed	-70,671	14 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP	329,773	$4.1m	under 0.1%	Added	+91,770	14 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC	213,100	$2.7m	under 0.1%	Trimmed	-93,600	13 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC	203,200	$2.5m	under 0.1%	Trimmed	-188,993	14 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp	202,156	$2.5m	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC	139,280	$1.7m	under 0.1%	Added	+49,144	14 Aug 2026 (the filing on sec.gov)
Man Group PLC	138,801	$1.7m	under 0.1%	Trimmed	-27,262	14 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP	115,710	$1.5m	under 0.1%	Trimmed	-8,550	14 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	117,964	$1.5m	under 0.1%	Added	+10,490	14 Aug 2026 (the filing on sec.gov)
Winton Group Ltd	102,300	$1.3m	under 0.1%	Added	+23,200	7 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP	87,219	$1.1m	under 0.1%	Trimmed	-962,308	14 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC	75,215	$933k	under 0.1%	New	new	13 Aug 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP	69,778	$869k	under 0.1%	Trimmed	-58,302	14 Aug 2026 (the filing on sec.gov)
Millennium Management LLC	59,276	$738k	under 0.1%	Trimmed	-69,945	14 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	43,607	$543k	under 0.1%	Added	+231	14 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP	41,034	$511k	under 0.1%	Added	+26,334	13 Aug 2026 (the filing on sec.gov)
Freestone Grove Partners LP	28,502	$355k	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP	19,554	$243k	under 0.1%	Trimmed	-50,832	14 Aug 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Fidelity (FMR LLC)existing position · 5,333,701 shares now+866,276
Arrowstreet Capital LPexisting position · 5,132,947 shares now+303,913
ExodusPoint Capital Management LPexisting position · 362,506 shares now+213,118
Tudor Investment Corpnew position · 202,156 shares now+202,156
Two Sigma Investments LPexisting position · 329,773 shares now+91,770

Reductions

Point72 Asset Management LPexisting position · 87,219 shares now-962,308
Citadel Advisors LLCexisting position · 439,630 shares now-210,148
Jane Street Group LLCexisting position · 203,200 shares now-188,993
Renaissance Technologies LLCexisting position · 213,100 shares now-93,600
D. E. Shaw & Co.existing position · 351,792 shares now-70,671

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (4)

Oaktree Capital Management LPwas $31m
Schonfeld Strategic Advisors LLCwas $1.4m
Caxton Associates LLPwas $313k
Balyasny Asset Management LLCwas $135k

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

1 in Q1 2022 to 2 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

ECVT and LIN →ECVT and GLW →ECVT and HWM →Choose a stock to compare with ECVT →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own ECVT, latest filings →Back to the 13F Explorer →

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Quarter	Holders	Reported value	Buyers	Sellers
Q1 2022	1	$851k	n.a.	n.a.
Q2 2022	1	$724k	n.a.	n.a.
Q2 2023	1	$25m	n.a.	n.a.
Q2 2025	1	$2.4m	1	0
Q3 2025	1	$25m	1	1
Q4 2025	1	$41m	8	8
Q1 2026	2	$93m	20	3
Q2 2026	2	$65m	13	14